Description
SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| SQLite | SQLite | < 3.53.2 |
| Siemens | RUGGEDCOM CROSSBOW Station Access Controller (SAC) | < V6.0 |
References
- https://sqlite.org/releaselog/3_53_2.htmlRelease Notes
- https://sqlite.org/src/info/061febcf41caIssue Tracking, Patch
- https://sqlite.org/src/info/4a5ad516ea93Issue Tracking, Patch
- https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterateThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-765416.html
Timeline
- Published
- Jun 9, 2026
- Last modified
- Oct 15, 2026
- NVD status
- Modified